m68k: add Sysam AMCORE open board support

Add support for Sysam AMCORE board, an open hardware embedded Linux
board, see http://sysam.it/openzone/projects/amcore/amcore.html for
any info.
Signed-off-by: Angelo Dureghello <angelo@sysam.it>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>

arch/m68k/Kconfig.machine

@@ -259,6 +259,12 @@ config M5407C3
 	help
 	  Support for the Motorola M5407C3 board.
 
+config AMCORE
+	bool "Sysam AMCORE board support"
+	depends on M5307
+	help
+	  Support for the Sysam AMCORE open-hardware generic board.
+
 config FIREBEE
 	bool "FireBee board support"
 	depends on M547x

arch/m68k/coldfire/Makefile

@@ -34,6 +34,7 @@ obj-$(CONFIG_NETtel)	+= nettel.o
 obj-$(CONFIG_CLEOPATRA)	+= nettel.o
 obj-$(CONFIG_FIREBEE)	+= firebee.o
 obj-$(CONFIG_MCF8390)	+= mcf8390.o
+obj-$(CONFIG_AMCORE)    += amcore.o
 
 obj-$(CONFIG_PCI)	+= pci.o
 

arch/m68k/coldfire/amcore.c

+/*
+ * amcore.c -- Support for Sysam AMCORE open board
+ *
+ * (C) Copyright 2016, Angelo Dureghello <angelo@sysam.it>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/dm9000.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/i2c.h>
+
+#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#include <asm/io.h>
+
+#if IS_ENABLED(CONFIG_DM9000)
+
+#define DM9000_IRQ	25
+#define DM9000_ADDR	0x30000000
+
+/*
+ * DEVICES and related device RESOURCES
+ */
+static struct resource dm9000_resources[] = {
+	/* physical address of the address register (CMD [A2] to 0)*/
+	[0] = {
+		.start  = DM9000_ADDR,
+		.end    = DM9000_ADDR,
+		.flags  = IORESOURCE_MEM,
+	},
+	/*
+	 * physical address of the data register (CMD [A2] to 1),
+	 * driver wants a range >=4 to assume a 32bit data bus
+	 */
+	[1] = {
+		.start  = DM9000_ADDR + 4,
+		.end    = DM9000_ADDR + 7,
+		.flags  = IORESOURCE_MEM,
+	},
+	/* IRQ line the device's interrupt pin is connected to */
+	[2] = {
+		.start  = DM9000_IRQ,
+		.end    = DM9000_IRQ,
+		.flags  = IORESOURCE_IRQ,
+	},
+};
+
+static struct dm9000_plat_data dm9000_platdata = {
+	.flags		= DM9000_PLATF_32BITONLY,
+};
+
+static struct platform_device dm9000_device = {
+	.name           = "dm9000",
+	.id             = 0,
+	.num_resources  = ARRAY_SIZE(dm9000_resources),
+	.resource       = dm9000_resources,
+	.dev = {
+		.platform_data = &dm9000_platdata,
+	}
+};
+#endif
+
+static void __init dm9000_pre_init(void)
+{
+	/* Set the dm9000 interrupt to be auto-vectored */
+	mcf_autovector(DM9000_IRQ);
+}
+
+/*
+ * Partitioning of parallel NOR flash (39VF3201B)
+ */
+static struct mtd_partition amcore_partitions[] = {
+	{
+		.name	= "U-Boot (128K)",
+		.size	= 0x20000,
+		.offset	= 0x0
+	},
+	{
+		.name	= "Kernel+ROMfs (2994K)",
+		.size	= 0x2E0000,
+		.offset	= MTDPART_OFS_APPEND
+	},
+	{
+		.name	= "Flash Free Space (1024K)",
+		.size	= MTDPART_SIZ_FULL,
+		.offset	= MTDPART_OFS_APPEND
+	}
+};
+
+static struct physmap_flash_data flash_data = {
+	.parts		= amcore_partitions,
+	.nr_parts	= ARRAY_SIZE(amcore_partitions),
+	.width		= 2,
+};
+
+static struct resource flash_resource = {
+	.start		= 0xffc00000,
+	.end		= 0xffffffff,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device flash_device = {
+	.name		= "physmap-flash",
+	.id		= -1,
+	.resource	= &flash_resource,
+	.num_resources	= 1,
+	.dev		= {
+		.platform_data	= &flash_data,
+	},
+};
+
+static struct platform_device rtc_device = {
+	.name	= "rtc-ds1307",
+	.id	= -1,
+};
+
+static struct i2c_board_info amcore_i2c_info[] __initdata = {
+	{
+		I2C_BOARD_INFO("ds1338", 0x68),
+	},
+};
+
+static struct platform_device *amcore_devices[] __initdata = {
+#if IS_ENABLED(CONFIG_DM9000)
+	&dm9000_device,
+#endif
+	&flash_device,
+	&rtc_device,
+};
+
+static int __init init_amcore(void)
+{
+#if IS_ENABLED(CONFIG_DM9000)
+	dm9000_pre_init();
+#endif
+
+	/* Add i2c RTC Dallas chip supprt */
+	i2c_register_board_info(0, amcore_i2c_info,
+				ARRAY_SIZE(amcore_i2c_info));
+
+	platform_add_devices(amcore_devices, ARRAY_SIZE(amcore_devices));
+
+	return 0;
+}
+
+arch_initcall(init_amcore);

arch/m68k/configs/amcore_defconfig

+CONFIG_LOCALVERSION="amcore-001"
+CONFIG_DEFAULT_HOSTNAME="amcore"
+CONFIG_SYSVIPC=y
+# CONFIG_FHANDLE is not set
+# CONFIG_USELIB is not set
+CONFIG_LOG_BUF_SHIFT=14
+CONFIG_NAMESPACES=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+# CONFIG_AIO is not set
+# CONFIG_ADVISE_SYSCALLS is not set
+# CONFIG_MEMBARRIER is not set
+CONFIG_EMBEDDED=y
+# CONFIG_VM_EVENT_COUNTERS is not set
+# CONFIG_COMPAT_BRK is not set
+# CONFIG_LBDAF is not set
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_MMU is not set
+CONFIG_M5307=y
+CONFIG_AMCORE=y
+CONFIG_UBOOT=y
+CONFIG_RAMSIZE=0x1000000
+CONFIG_KERNELBASE=0x20000
+CONFIG_NOMMU_INITIAL_TRIM_EXCESS=0
+CONFIG_BINFMT_FLAT=y
+# CONFIG_COREDUMP is not set
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_IPV6 is not set
+# CONFIG_WIRELESS is not set
+# CONFIG_UEVENT_HELPER is not set
+CONFIG_FW_LOADER_USER_HELPER_FALLBACK=y
+# CONFIG_ALLOW_DEV_COREDUMP is not set
+CONFIG_CONNECTOR=y
+CONFIG_MTD=y
+CONFIG_MTD_BLOCK=y
+CONFIG_MTD_CFI=y
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_CFI_ADV_OPTIONS=y
+CONFIG_MTD_CFI_LE_BYTE_SWAP=y
+CONFIG_MTD_CFI_GEOMETRY=y
+# CONFIG_MTD_CFI_I2 is not set
+CONFIG_MTD_CFI_AMDSTD=y
+CONFIG_MTD_CFI_STAA=y
+CONFIG_MTD_ROM=y
+CONFIG_MTD_COMPLEX_MAPPINGS=y
+CONFIG_MTD_PHYSMAP=y
+CONFIG_MTD_UCLINUX=y
+CONFIG_MTD_PLATRAM=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_NETDEVICES=y
+# CONFIG_NET_VENDOR_ARC is not set
+# CONFIG_NET_CADENCE is not set
+# CONFIG_NET_VENDOR_BROADCOM is not set
+CONFIG_DM9000=y
+# CONFIG_NET_VENDOR_EZCHIP is not set
+# CONFIG_NET_VENDOR_INTEL is not set
+# CONFIG_NET_VENDOR_MARVELL is not set
+# CONFIG_NET_VENDOR_MICREL is not set
+# CONFIG_NET_VENDOR_NATSEMI is not set
+# CONFIG_NET_VENDOR_NETRONOME is not set
+# CONFIG_NET_VENDOR_QUALCOMM is not set
+# CONFIG_NET_VENDOR_RENESAS is not set
+# CONFIG_NET_VENDOR_ROCKER is not set
+# CONFIG_NET_VENDOR_SAMSUNG is not set
+# CONFIG_NET_VENDOR_SEEQ is not set
+# CONFIG_NET_VENDOR_SMSC is not set
+# CONFIG_NET_VENDOR_STMICRO is not set
+# CONFIG_NET_VENDOR_SYNOPSYS is not set
+# CONFIG_NET_VENDOR_VIA is not set
+# CONFIG_NET_VENDOR_WIZNET is not set
+# CONFIG_WLAN is not set
+# CONFIG_INPUT is not set
+# CONFIG_SERIO is not set
+# CONFIG_VT is not set
+# CONFIG_UNIX98_PTYS is not set
+# CONFIG_DEVMEM is not set
+# CONFIG_DEVKMEM is not set
+CONFIG_SERIAL_MCF=y
+CONFIG_SERIAL_MCF_BAUDRATE=115200
+CONFIG_SERIAL_MCF_CONSOLE=y
+# CONFIG_HW_RANDOM is not set
+CONFIG_I2C=y
+# CONFIG_I2C_COMPAT is not set
+CONFIG_I2C_CHARDEV=y
+# CONFIG_I2C_HELPER_AUTO is not set
+CONFIG_I2C_COLDFIRE=y
+CONFIG_PPS=y
+# CONFIG_HWMON is not set
+# CONFIG_USB_SUPPORT is not set
+CONFIG_RTC_CLASS=y
+# CONFIG_RTC_SYSTOHC is not set
+CONFIG_RTC_DRV_DS1307=y
+CONFIG_EXT2_FS=y
+CONFIG_EXT2_FS_XATTR=y
+# CONFIG_FILE_LOCKING is not set
+# CONFIG_DNOTIFY is not set
+# CONFIG_INOTIFY_USER is not set
+CONFIG_FSCACHE=y
+# CONFIG_PROC_SYSCTL is not set
+CONFIG_JFFS2_FS=y
+CONFIG_ROMFS_FS=y
+CONFIG_ROMFS_BACKED_BY_BOTH=y
+# CONFIG_NETWORK_FILESYSTEMS is not set
+CONFIG_PRINTK_TIME=y
+# CONFIG_ENABLE_WARN_DEPRECATED is not set
+# CONFIG_SECTION_MISMATCH_WARN_ONLY is not set
+CONFIG_PANIC_ON_OOPS=y
+# CONFIG_SCHED_DEBUG is not set
+# CONFIG_DEBUG_BUGVERBOSE is not set
+# CONFIG_CRYPTO_ECHAINIV is not set
+CONFIG_CRYPTO_ANSI_CPRNG=y
+# CONFIG_CRYPTO_HW is not set
+CONFIG_CRC16=y